You might need to flip around the trans crossmemeber. If the holes are offset at all you might have just put it in backwards by mistake and just flipping it around might fix your issues. Not sure if this will work but will be doing a big block swap on a 78 soon so I will have to look out for this issue also.
The tranny cross member is drill to only go in one way.
It is just the pass side motor mount that has a problem. Got the tranny to mount up and the drivers side motor mount is fine. Really weird.
